Jiao Qi, Chen Qin, Wang Lian, Chen Hualin, Li Yongjin
Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Nanomaterials (Basel). 2019 Feb 5;9(2):206. doi: 10.3390/nano9020206.
Polyoxymethylene (POM) blends with excellent stiffness⁻toughness balance are successfully developed using Tributyl(octyl)phosphonium bis(trifloromethanesulfonyl) imide (TBOP-TFSI), one type of room-temperature ionic liquid, as the nucleating agent. Crystallization behaviors of POM blends have been studied by differential scanning calorimetry (DSC) and polarized light microscopy (PLM). The incorporation of TBOP-TFSI induces the crystal nucleation and fine crystal grain of POM, and also a much shorter hemi-crystalline time with only 0.5 wt% addition. The nucleation effect of ionic liquid leads to considerable improvement in the impact strength of POM blends while not sacrificing its tensile strength. Moreover, antistatic properties with a long-time stable performance are achieved by TBOP-TFSI addition as the electrical resistance reaches 10 Ω/sq.
使用一种室温离子液体三丁基（辛基）鏻双（三氟甲磺酰）亚胺（TBOP-TFSI）作为成核剂，成功开发出了具有优异刚度-韧性平衡的聚甲醛（POM）共混物。通过差示扫描量热法（DSC）和偏光显微镜（PLM）研究了POM共混物的结晶行为。加入TBOP-TFSI可诱导POM的晶核形成和细化晶粒，并且在仅添加0.5 wt%时半结晶时间也大大缩短。离子液体的成核作用在不牺牲POM共混物拉伸强度的情况下，使其冲击强度得到显著提高。此外，通过添加TBOP-TFSI实现了具有长期稳定性能的抗静电性能，电阻达到10 Ω/sq。
